I'd say you are hitting the point I was originally trying to make. Poets, at least many tend to write about a multitude of topics. Even from those, not everyone likes every poem about any subject from an author. I'm not saying that we shouldn't be able to go from a genre to a more specific writer/musician. I just disagree with starting out with specifics.
If I were a better and more knowledgeable man about all things famous poets I could probably give you recommendations about those two genres for famous names. It also doesn't help that I give no shits about famous poets.
Though I could give you a decent Romanticism poet though she is not a member of this website and she appears to have taken down her poem which was rather nice and romantic about her husband that I liked. She is always switching up her posted works to showcase others because she is a better person than I. But I sadly can't link you to the specific poem I was thinking about.
Fiction is easier, though science fiction I would be hard-pressed.
Here is my recommendation for fiction. A great writer I enjoy. https://allpoetry.com/poem/12656002-Terra-Firma-by-Djembeweaver